/**
 * Copyright (C) 2011 Whisper Systems
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.appspot.eusms;

import android.content.Context;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.CallLog.Calls;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.text.format.DateUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckedTextView;
import android.widget.CursorAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.actionbarsherlock.app.SherlockListFragment;
import com.appspot.eusms.contacts.ContactAccessor;
import com.appspot.eusms.util.RedPhoneCallTypes;

import com.appspot.eusms.R;
import com.appspot.eusms.contacts.ContactAccessor.ContactData;
import com.appspot.eusms.contacts.ContactAccessor.NumberData;

import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;

/**
 * Displays a list of recently used contacts for multi-select.  Displayed
 * by the ContactSelectionActivity in a tab frame, and ultimately used by
 * ComposeMessageActivity for selecting destination message contacts.
 *
 * @author Moxie Marlinspike
 */
public class ContactSelectionRecentFragment extends SherlockListFragment
        implements LoaderManager.LoaderCallbacks<Cursor> {

    private final HashMap<Long, ContactData> selectedContacts = new HashMap<Long, ContactData>();

    @Override
    public void onActivityCreated(Bundle icicle) {
        super.onActivityCreated(icicle);

        initializeResources();
        initializeCursor();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.contact_selection_recent_activity, container, false);
    }

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        ((CallItemView) v).selected();
    }

    private void initializeCursor() {
        setListAdapter(new ContactSelectionListAdapter(getActivity(), null));
        this.getLoaderManager().initLoader(0, null, this);
    }

    public List<ContactData> getSelectedContacts() {
        List<ContactData> contacts = new LinkedList<ContactData>();
        contacts.addAll(selectedContacts.values());

        return contacts;
    }

    private void addSingleNumberContact(ContactData contactData) {
        selectedContacts.put(contactData.id, contactData);
    }

    private void removeContact(ContactData contactData) {
        selectedContacts.remove(contactData.id);
    }

    private void initializeResources() {
        this.getListView().setFocusable(true);
    }

    private class ContactSelectionListAdapter extends CursorAdapter {

        public ContactSelectionListAdapter(Context context, Cursor c) {
            super(context, c);
        }

        @Override
        public View newView(Context context, Cursor cursor, ViewGroup parent) {
            CallItemView view = new CallItemView(context);
            bindView(view, context, cursor);

            return view;
        }

        @Override
        public void bindView(View view, Context context, Cursor cursor) {
            long id = cursor.getLong(cursor.getColumnIndexOrThrow(Calls._ID));
            String name = cursor.getString(cursor.getColumnIndexOrThrow(Calls.CACHED_NAME));
            String label = cursor.getString(cursor.getColumnIndexOrThrow(Calls.CACHED_NUMBER_LABEL));
            String number = cursor.getString(cursor.getColumnIndexOrThrow(Calls.NUMBER));
            int type = cursor.getInt(cursor.getColumnIndexOrThrow(Calls.TYPE));
            long date = cursor.getLong(cursor.getColumnIndexOrThrow(Calls.DATE));

            ((CallItemView) view).set(id, name, label, number, type, date);
        }
    }

    private class CallItemView extends RelativeLayout {
        private ContactData contactData;
        private Context context;
        private ImageView callTypeIcon;
        private TextView date;
        private TextView label;
        private TextView number;
        private CheckedTextView line1;

        public CallItemView(Context context) {
            super(context);

            LayoutInflater li = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            li.inflate(R.layout.recent_call_item_selectable, this, true);

            this.context = context;
            this.callTypeIcon = (ImageView) findViewById(R.id.call_type_icon);
            this.date = (TextView) findViewById(R.id.date);
            this.label = (TextView) findViewById(R.id.label);
            this.number = (TextView) findViewById(R.id.number);
            this.line1 = (CheckedTextView) findViewById(R.id.line1);
        }

        public void selected() {
            line1.toggle();

            if (line1.isChecked()) {
                addSingleNumberContact(contactData);
            } else {
                removeContact(contactData);
            }
        }

        public void set(long id, String name, String label, String number, int type, long date) {
            if (name == null) {
                name = ContactAccessor.getInstance().getNameForNumber(getActivity(), number);
            }

            this.line1.setText((name == null || name.equals("")) ? number : name);
            this.number.setText((name == null || name.equals("")) ? "" : number);
            this.label.setText(label);
            this.date.setText(DateUtils.getRelativeDateTimeString(context, date, System.currentTimeMillis(), DateUtils.MINUTE_IN_MILLIS, DateUtils.FORMAT_ABBREV_RELATIVE));

            if (type == Calls.INCOMING_TYPE || type == RedPhoneCallTypes.INCOMING)
                callTypeIcon.setImageDrawable(getResources().getDrawable(R.drawable.ic_call_log_list_incoming_call));
            else if (type == Calls.OUTGOING_TYPE || type == RedPhoneCallTypes.OUTGOING)
                callTypeIcon.setImageDrawable(getResources().getDrawable(R.drawable.ic_call_log_list_outgoing_call));
            else if (type == Calls.MISSED_TYPE || type == RedPhoneCallTypes.MISSED)
                callTypeIcon.setImageDrawable(getResources().getDrawable(R.drawable.ic_call_log_list_missed_call));

            this.contactData = new ContactData(id, name);
            this.contactData.numbers.add(new NumberData(null, number));

            if (selectedContacts.containsKey(id))
                this.line1.setChecked(true);
            else
                this.line1.setChecked(false);
        }
    }

    @Override
    public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
        return new CursorLoader(getActivity(), Calls.CONTENT_URI,
                null, null, null,
                Calls.DEFAULT_SORT_ORDER);
    }

    @Override
    public void onLoadFinished(Loader<Cursor> arg0, Cursor cursor) {
        ((CursorAdapter) getListAdapter()).changeCursor(cursor);
    }

    @Override
    public void onLoaderReset(Loader<Cursor> arg0) {
        ((CursorAdapter) getListAdapter()).changeCursor(null);
    }

}
